Been making some actual progress on the Alfa/Dio Tipo build.
And lots of changes!
No longer using the TR4 chassis, may put that under another Dio later.
Now using an old Art Morrison design multi-tube frame, or at least basing my build on his design with some updates.
The good news
so far is that I have the main chassis tubes bent to shape so I have the foundation to build on.
Also used some PVC tube and a hole-saw to fabricate mock-up cross-members that I may easily move around as needed for optimum placement.
Also made a cradle to hold the engine and trans, spacers for the chassis and body.
Engine sits about 4" behind the axle center-line as measured to face of the front cover (2" to face of crank pulley) so it will be a "Forward mid-engine" build.
I will be sitting only about 14" ahead of the rear axle, I expect weight balance to be excellent.
Trying for very neutral and flat handling.
After getting all the mocking up done I've figured out that there are some issues with the AM drawings.
But I've also determined that the stock Alfa Spider track is fine with factory optional 6"x14" wheels and 205/60-14 tires.
May try to go to 15" for better performance tire availability (?).
The bad (?)
, to get the engine to fit without having to cut the bonnet I end up with only 4" ground clearance under the Spider oil pan at the drain plug.
That is at 10" behind the front wheel center-line, so the tires may not help to lift the sump over speed bumps very much.
May not be as bad as the sump being low in front of the wheels as original.
Probably not an issue on a track, but I'm a little leery of it for the street.
Never thought of Alfa engines as being particularly tall before now.
Almost makes me wish for a 1300 to use, I know they are shorter and rev like crazy.
I am now looking into ways to make the pan shallower without having to go to dry-sump.
This IS supposed to be a budget build and eventual guide for others to also give new life to rusted out Spiders.
I have an Alfetta pan and oil pump, but is seems the depth is virtually identical to a Spider pan.
Would prefer to use the Spider pan if possible as it appears to have better oil control for cornering.
Thought of fabricating a flat bottom half but not sure the oil pump and pick-up could be modified to work?
Front suspension will use reversed stock lower arms and spindles, custom upper arms, R&P steering (Why the arms are reversed!) and coil-over shocks.
Rear suspension is based on the AM four-link.
As it turns out the chassis fabrication is simple compared to the bodywork.
This is a very basic kit, no factory chassis available at this time and no real instructions or detail parts.
Very similar to the kits from the 50's and 60's that so many buyers were overwhelmed by and never finished.
I will be finishing this one, it's a "Bucket list, has to be done" item for me.